RA/DEC (2000)
23:38:11.815 -25:47:49.04
354.549228618 -25.7969556274
Type
SN Ia
Redshift
0.13
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-11-14 09:56:35.520
TNS AT
Y
Public
Y
Discovery Mag
19.79
Filter
L-GOTO
Reporter/s
D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025adiz - 2025-11-15 00:00:00 MMT / BINOSPEC (SAGUARO)z=
 ▌SN_2025adiz - 2025-11-15 00:00:00 Other / Other (SAGUARO)z=
▌Show H at z=vexp= km/s
▌Show He at z=vexp= km/s
▌Show He II at z=vexp= km/s
▌Show C II at z=vexp= km/s
▌Show C III at z=vexp= km/s
▌Show C IV at z=vexp= km/s
▌Show N II at z=vexp= km/s
▌Show N III at z=vexp= km/s
▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
▌Show [O I] at z=vexp= km/s
▌Show O II at z=vexp= km/s
▌Show [O II] at z=vexp= km/s
▌Show [O III] at z=vexp= km/s
▌Show O V at z=vexp= km/s
▌Show O VI at z=vexp= km/s
▌Show Na at z=vexp= km/s
▌Show Mg at z=vexp= km/s
▌Show Mg II at z=vexp= km/s
▌Show Si II at z=vexp= km/s
▌Show S II at z=vexp= km/s
▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
▌Show Fe III at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Tellurics 
▌Show Galaxy lines at z=
▌Show WR-WN at z=vexp= km/s
▌Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌GOTO-S_GOTO-4_L
 ▌GOTO-S_GOTO-3_L
 ▌PS2_GPC2_w
 ▌ATLAS-CHL_ATLAS-04_cyan
 ▌ATLAS-STH_ATLAS-03_orange
 ▌CTIO-4m_DECAM_g
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
Spectra
 ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
22417 2025-11-15 00:00:00 MMT / BINOSPEC 900 Noah Franz Bhagya Subrayan SAGUARO tns_2025adiz_2025-11-15_00-00-00_MMT_BINOSPEC_SAGUARO.txt Object
22416 2025-11-15 00:00:00 Other / Other 900 Noah Franz Bhagya Subrayan SAGUARO tns_2025adiz_2025-11-15_00-00-00_Other_Other_SAGUARO.txt Object Using SNID (Blondin & Tonry 2007, ApJ, 666, 1024) and SNID-SAGE (Stoppa 2025), we find several good matches to a SN Ia-9T, a few days before maximum (e.g., SN 2005M at z ~0.13 and -2.7d from maximum).
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-11-09 12:24:56 - 2025-11-09 12:24:56 2460989.017312 - 2460989.017312 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
531012 2025-11-09 12:24:56 2460989.017312 20.1 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
L-GOTO GOTO-S_GOTO-3 2025-11-14 09:56:36 - 2025-11-14 09:56:36 2460993.914302 - 2460993.914302 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
531013 2025-11-14 09:56:36 2460993.914302 19.79 0.14 ABMag L-GOTO GOTO-S_GOTO-3 360
w-P1 PS2_GPC2 2025-11-15 05:54:57 - 2025-11-15 05:54:57 2460994.74649 - 2460994.74649 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
553051 2025-11-15 05:54:57 2460994.74649 19.73 0.05 22 ABMag w-P1 PS2_GPC2 45 Robot
cyan-ATLAS ATLAS-CHL_ATLAS-04 2025-11-17 02:01:00 - 2025-11-17 02:01:00 2460996.58403 - 2460996.58403 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
531642 2025-11-17 02:01:00 2460996.58403 19.363 0.171 19.35 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2025-11-15 20:38:53 - 2025-11-15 20:38:53 2460995.36034 - 2460995.36034 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
531641 2025-11-15 20:38:53 2460995.36034 19.14 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
g-Sloan CTIO-4m_DECAM 2025-11-14 01:37:07 - 2025-11-14 01:37:07 2460993.567436 - 2460993.567436 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
531096 2025-11-14 01:37:07 2460993.567436 19.7194 0.0138569 ABMag g-Sloan CTIO-4m_DECAM
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks ADS Bibcode Unreal Auto classification
288530 2026-01-23 11:46:02 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 23:38:11.815 -25:47:49.04 2025-11-15 05:54:56.736 19.73 w-P1 PSN PS25mtr Pan-STARRS N
277169 2025-11-17 11:12:39 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 23:38:11.825 -25:47:48.89 2025-11-17 02:01:00.192 19.363 cyan-ATLAS PSN ATLAS25ogu ATLAS N
276790 2025-11-15 00:42:26 GW-MMADS_bot Xander J. Hall (CMU),Tomás Cabrera (CMU),Lei Hu (CMU) et al. GW-MMADS GW-MMADS 23:38:11.804 -25:47:49.15 2025-11-14 01:37:06.816 19.7194 g-Sloan PSN T202511142338118m254749 GW-MMADS N
276723 2025-11-14 14:20:47 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 23:38:11.823 -25:47:49.10 2025-11-14 09:56:35.520 19.79 L-GOTO Other GOTO25jzt GOTO 2025TNSTR4575....1O N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22416 2025-11-15 18:39:03 SAGUARO_Bot1 Bhagya Subrayan, on behalf of SAGUARO et al SAGUARO SN Ia 0.13 1 SAGUARO Using SNID (Blondin & Tonry 2007, ApJ, 666, 1024) and SNID-SAGE (Stoppa 2025), we find several good matches to a SN Ia-9T, a few days before maximum (e.g., SN 2005M at z ~0.13 and -2.7d from maximum). 2025TNSCR4594....1S
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
22417 2025-11-15 00:00:00 MMT / BINOSPEC 900 Noah Franz Bhagya Subrayan SAGUARO tns_2025adiz_2025-11-15_00-00-00_MMT_BINOSPEC_SAGUARO.txt Object
22415 2025-11-15 18:21:04 SAGUARO_Bot1 Bhagya Subrayan, on behalf of SAGUARO SAGUARO SN 0.13 1 SAGUARO 2025TNSCR4593....1S
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
22416 2025-11-15 00:00:00 Other / Other 900 Noah Franz Bhagya Subrayan SAGUARO tns_2025adiz_2025-11-15_00-00-00_Other_Other_SAGUARO.txt Object Using SNID (Blondin & Tonry 2007, ApJ, 666, 1024) and SNID-SAGE (Stoppa 2025), we find several good matches to a SN Ia-9T, a few days before maximum (e.g., SN 2005M at z ~0.13 and -2.7d from maximum).

Comments

TNS
System

Fri, 01/23/2026 - 11:46

Object coordinates updated

Object coordinates updated according to AT-report 288530 of Group Pan-STARRS
Previous RA, DEC: 23:38:11.825, -25:47:48.89 (354.54927, -25.796915)
Updated RA, DEC: 23:38:11.815, -25:47:49.04 (354.549228618, -25.7969556274)

TNS
System

Mon, 11/17/2025 - 11:12

Object coordinates updated

Object coordinates updated according to AT-report 277169 of Group ATLAS
Previous RA, DEC: 23:38:11.823, -25:47:49.10 (354.549264, -25.796972)
Updated RA, DEC: 23:38:11.825, -25:47:48.89 (354.54927, -25.796915)